let bool: Boolean = false
let num: number = 13
let srt: string = '123'
// console.log(num);
let arr1: number[] = [1,2,3]
let arr2: Array<number | string> = [1, 2, '4']
console.log(arr2);

let tuple: [string, number] = ['1' ,2]

let add = (x: number, y: number) : number => x + y

let noReturn = () => {}

